CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM Running, Solving & CFD

Physical meaning of Ub vector?

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   March 14, 2013, 13:38
Default Physical meaning of Ub vector?
  #1
Senior Member
 
JR22's Avatar
 
Jose Rey
Join Date: Oct 2012
Posts: 121
Rep Power: 8
JR22 will become famous soon enough
Hi,

The stressComponents postprocessing utility (utilities/postProcessing/stressField/stressComponents.C) provides a Ub vector (x,y,z) mapped on surfaces. But, my surface is a no-slip boundary which should have a velocity at the surface of 0. If this is indeed a velocity vector, at what distance from the surface is it being sampled? How is it calculated?

Thanks very much

Last edited by JR22; March 14, 2013 at 15:38.
JR22 is offline   Reply With Quote

Old   March 15, 2013, 15:09
Default
  #2
Senior Member
 
JR22's Avatar
 
Jose Rey
Join Date: Oct 2012
Posts: 121
Rep Power: 8
JR22 will become famous soon enough
Anybody know where to look it up in the code to figure out what the Ub calculated as part of the stressComponents is? It seems to be showing the Bulk Velocity calculated normal to the surface. This would make sense, not very much why it is placed where it is.

Last edited by JR22; March 19, 2013 at 08:02.
JR22 is offline   Reply With Quote

Reply

Tags
mesh velocity, post processing, shear stress, utilities, velocity

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 06:36
how to set periodic boundary conditions Ganesh FLUENT 13 January 22, 2014 05:11
Physical meaning of this velocity pressure correlation? huijingmm Main CFD Forum 0 January 22, 2010 01:20
Divergence of Tensor (physical meaning) John Main CFD Forum 1 May 22, 2008 15:48
Physical meaning of Y+? Wodo Main CFD Forum 4 May 20, 2005 01:27


All times are GMT -4. The time now is 04:04.